DAFTAR PUSTAKA

http://digilib.unimus.ac.id/files/disk1/114/jtptunimus-gdl-ervinakhoi-5700-2-babii.pdf 

http://direktori.umy.ac.id/uploads/skripsi2/20060320098-Bab-I.pdf 

http://informasi-wow.blogspot.com/2013/08/pengertian-hipertensi-atau-tekanan-darah-tinggi.html 

http://mediskus.com/penyakit/tekanan-darah-tinggi.html 

http://repository.usu.ac.id/bitstream/123456789/20131/4/Chapter%20II.pdf